PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-01:57:50
G08     312.0          18.0                5.7 +/-    1.50      13.2 +/-    1.50  0.070 / 0.090
G10     321.6          58.0                7.8 +/-    0.98       9.0 +/-    0.98  0.100 / 0.100
G14     215.8          28.3               12.2 +/-    1.61      22.2 +/-    1.61  0.040 / 0.040
G15     46.0           16.3                6.6 +/-    3.42      16.0 +/-    3.42  0.040 / 0.040
G18     28.4           61.9                8.1 +/-    2.02       9.0 +/-    2.02  0.060 / 0.110
G21     128.7          61.1               12.0 +/-    0.54      13.5 +/-    0.54  0.060 / 0.090
G24     81.0           30.5                6.0 +/-    1.47      10.5 +/-    1.47  0.030 / 0.020
G27     278.9          38.1                8.4 +/-    3.02      12.6 +/-    3.02  0.030 / 0.030
G32     219.9          46.4               10.6 +/-    2.36      14.1 +/-    2.36  0.190 / 0.230