PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-13:12:50
G01     105.7          26.0                7.3 +/-    0.88      14.0 +/-    0.88  0.210 / 0.460
G07     110.0          54.4                6.3 +/-    0.61       7.6 +/-    0.61  0.150 / 0.350
G08     41.7           17.6                5.6 +/-    1.50      13.0 +/-    1.50  0.030 / 0.020
G09     173.0          10.6                5.3 +/-    3.30      14.5 +/-    3.30  0.030 / 0.020
G11     84.9           40.7                6.9 +/-    1.73       9.9 +/-    1.73  0.030 / 0.030
G13     310.2          27.6                3.2 +/-    1.88       5.9 +/-    1.88  0.030 / 0.030
G17     205.7          41.5                7.1 +/-    1.28      10.1 +/-    1.28  0.070 / 0.160
G19     209.1          15.6                6.3 +/-    3.16      15.4 +/-    3.16  0.080 / 0.150
G28     320.5          61.0                4.5 +/-    0.55       5.1 +/-    0.55  0.040 / 0.070
G30     18.1           77.7                5.4 +/-    0.94       5.5 +/-    0.94  0.040 / 0.060