PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-22:42:40
G01     38.7           12.1               10.7 +/-    3.67      28.4 +/-    3.67  0.060 / 0.060
G02     199.2          14.4               20.9 +/-    2.70      52.8 +/-    2.70  0.050 / 0.040
G06     173.3          45.6               14.8 +/-    0.73      19.7 +/-    0.73  0.110 / 0.170
G13     233.3          18.2               16.2 +/-    1.64      37.1 +/-    1.64  0.270 / 0.220
G17     1.5            68.8               12.1 +/-    0.43      12.9 +/-    0.43  0.090 / 0.180
G19     293.4          70.4               11.2 +/-    0.67      11.8 +/-    0.67  0.080 / 0.150
G24     314.4          23.8               10.7 +/-    1.65      21.5 +/-    1.65  0.120 / 0.190
G28     79.3           43.6               12.1 +/-    0.92      16.7 +/-    0.92  0.130 / 0.210
G30     155.5          20.5               16.8 +/-    1.32      36.6 +/-    1.32  0.050 / 0.060