PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-21:58:10
G01     47.7           23.6               10.9 +/-    0.87      22.1 +/-    0.87  0.090 / 0.330
G06     176.9          28.5               15.6 +/-    1.85      28.2 +/-    1.85  0.090 / 0.300
G07     147.3          10.0               18.9 +/-    4.55      52.7 +/-    4.55  0.060 / 0.130
G11     44.4           13.8                9.8 +/-    1.42      25.0 +/-    1.42  0.070 / 0.130
G13     247.6          28.6               13.1 +/-    2.09      23.7 +/-    2.09  0.140 / 0.330
G15     280.7          15.2               11.6 +/-    2.33      28.8 +/-    2.33  0.080 / 0.240
G17     308.0          77.0               13.7 +/-    0.91      14.0 +/-    0.91  0.040 / 0.080
G19     251.6          61.5               13.1 +/-    0.83      14.7 +/-    0.83  0.030 / 0.070
G28     57.7           51.4               12.0 +/-    0.69      14.9 +/-    0.69  0.220 / 0.350
G30     150.7          36.6               14.8 +/-    1.62      22.8 +/-    1.62  0.170 / 0.400