PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-23:12:40
G05     49.0           18.8                8.4 +/-    1.91      19.1 +/-    1.91  0.140 / 0.230
G10     237.8          13.2               14.1 +/-    2.00      36.6 +/-    2.00  0.150 / 0.290
G13     74.4           37.3                9.5 +/-    0.91      14.5 +/-    0.91  0.080 / 0.070
G15     123.5          53.3               10.7 +/-    1.13      12.9 +/-    1.13  0.050 / 0.050
G16     313.9          12.0                8.7 +/-    2.21      23.2 +/-    2.21  0.100 / 0.240
G18     247.4          43.1               12.7 +/-    2.20      17.7 +/-    2.20  0.140 / 0.180
G20     31.3           63.1                9.0 +/-    0.61       9.9 +/-    0.61  0.130 / 0.180
G21     315.1          48.8               10.0 +/-    0.86      12.9 +/-    0.86  0.120 / 0.300
G26     287.2          19.6                9.9 +/-    1.94      21.9 +/-    1.94  0.030 / 0.030
G29     156.4          66.9               11.9 +/-    0.82      12.8 +/-    0.82  0.030 / 0.030