PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-23:28:10
G02     205.1          42.6               14.0 +/-    1.51      19.5 +/-    1.51  0.040 / 0.030
G06     143.6          75.7               11.8 +/-    0.71      12.2 +/-    0.71  0.030 / 0.030
G12     311.1          20.4                8.9 +/-    1.49      19.3 +/-    1.49  0.130 / 0.180
G17     38.3           48.0                9.8 +/-    1.74      12.7 +/-    1.74  0.250 / 0.170
G19     12.1           61.7               10.0 +/-    0.58      11.2 +/-    0.58  0.100 / 0.070
G24     290.2          40.7               16.4 +/-    4.36      23.6 +/-    4.36  0.060 / 0.070
G28     108.8          26.4               12.2 +/-    1.25      23.1 +/-    1.25  0.110 / 0.160