PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-14:27:50
G01     113.9          21.2                9.7 +/-    1.94      20.7 +/-    1.94  0.130 / 0.160
G07     96.7           60.0                9.6 +/-    1.06      10.9 +/-    1.06  0.140 / 0.150
G08     42.9           25.0                8.9 +/-    1.88      17.5 +/-    1.88  0.030 / 0.030
G09     175.0          19.4                9.4 +/-    4.89      21.1 +/-    4.89  0.040 / 0.020
G11     96.2           39.8                9.9 +/-    0.84      14.4 +/-    0.84  0.040 / 0.030
G13     315.9          21.8                6.7 +/-    2.02      14.1 +/-    2.02  0.040 / 0.040
G17     202.5          32.5               11.3 +/-    1.09      18.8 +/-    1.09  0.130 / 0.340
G28     303.2          59.0                6.5 +/-    1.45       7.4 +/-    1.45  0.220 / 0.180
G30     351.7          71.1                7.9 +/-    0.69       8.3 +/-    0.69  0.090 / 0.190