PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-19:12:50
G01     94.0           30.9               13.5 +/-    1.40      23.3 +/-    1.40  0.390 / 0.180
G07     122.2          48.8               14.4 +/-    0.62      18.4 +/-    0.62  0.200 / 0.170
G08     42.2           12.5                9.7 +/-    3.22      25.7 +/-    3.22  0.030 / 0.030
G11     73.8           41.6               13.4 +/-    1.23      19.0 +/-    1.23  0.020 / 0.030
G13     298.4          34.7               11.9 +/-    2.66      19.0 +/-    2.66  0.030 / 0.050
G17     213.0          46.8               13.0 +/-    0.71      17.0 +/-    0.71  0.030 / 0.040
G18     67.6           24.6               12.8 +/-    1.47      25.3 +/-    1.47  0.040 / 0.040
G19     213.4          22.8               13.9 +/-    2.12      28.6 +/-    2.12  0.040 / 0.040
G28     343.1          61.9               12.1 +/-    0.42      13.5 +/-    0.42  0.070 / 0.130
G30     93.7           77.2               14.2 +/-    0.21      14.5 +/-    0.21  0.070 / 0.130