PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/30-04:28:10
G08     269.6          19.8                7.3 +/-    1.75      16.0 +/-    1.75  0.030 / 0.020
G10     51.3           60.7                3.4 +/-    0.90       3.8 +/-    0.90  0.030 / 0.010
G11     312.6          16.7                4.1 +/-    1.89       9.7 +/-    1.89  0.110 / 0.290
G14     260.4          65.2                6.3 +/-    0.66       6.9 +/-    0.66  0.110 / 0.270
G18     86.5           40.5                3.3 +/-    1.45       4.8 +/-    1.45  0.200 / 0.160
G21     153.4          19.4                3.7 +/-    3.46       8.3 +/-    3.46  0.230 / 0.490
G24     42.2           14.4                3.0 +/-    2.99       7.5 +/-    2.99  0.030 / 0.030
G27     233.6          18.2                8.4 +/-    3.61      19.4 +/-    3.61  0.030 / 0.060
G31     179.1          26.0                5.8 +/-    1.20      11.0 +/-    1.20  0.070 / 0.040
G32     318.6          75.5                4.4 +/-    0.54       4.5 +/-    0.54  0.060 / 0.060