PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-05:43:10
G01     82.0           33.0                5.8 +/-    0.89       9.6 +/-    0.89  0.030 / 0.040
G07     131.2          39.0                8.8 +/-    0.89      13.0 +/-    0.89  0.030 / 0.040
G11     62.2           36.6                5.8 +/-    0.84       9.0 +/-    0.84  0.200 / 0.210
G13     287.9          36.8                8.3 +/-    0.82      12.8 +/-    0.82  0.110 / 0.250
G15     310.0          13.1                3.9 +/-    2.47      10.2 +/-    2.47  0.050 / 0.090
G17     220.7          61.3               11.3 +/-    1.28      12.7 +/-    1.28  0.050 / 0.090
G19     218.1          34.6               11.4 +/-    1.44      18.2 +/-    1.44  0.050 / 0.070
G28     3.8            60.9                5.0 +/-    0.73       5.6 +/-    0.73  0.050 / 0.070
G30     122.1          68.8                8.6 +/-    0.32       9.2 +/-    0.32  0.070 / 0.050