PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-21:58:00
G01     75.0           33.3                9.9 +/-    0.86      16.2 +/-    0.86  0.140 / 0.280
G07     135.3          34.7               10.7 +/-    1.43      17.0 +/-    1.43  0.150 / 0.230
G11     57.7           34.5                9.8 +/-    0.86      15.6 +/-    0.86  0.070 / 0.120
G13     279.5          37.6               10.5 +/-    0.93      15.9 +/-    0.93  0.200 / 0.120
G15     305.4          14.7                5.8 +/-    1.96      14.5 +/-    1.96  0.200 / 0.340
G17     227.1          61.2               10.4 +/-    1.23      11.7 +/-    1.23  0.270 / 0.500
G18     52.4           20.2                9.7 +/-    6.90      21.2 +/-    6.90  0.030 / 0.030
G19     221.8          38.1               11.7 +/-    1.47      17.5 +/-    1.47  0.040 / 0.040
G28     14.1           59.9                9.5 +/-    1.20      10.8 +/-    1.20  0.060 / 0.070
G30     131.4          62.9                9.6 +/-    0.41      10.6 +/-    0.41  0.070 / 0.130