PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/22-01:13:00
G01     47.7           23.7                6.2 +/-    1.41      12.5 +/-    1.41  0.330 / 0.350
G06     180.4          23.5               11.0 +/-    2.66      22.2 +/-    2.66  0.210 / 0.200
G11     43.6           11.6                4.8 +/-    2.13      12.8 +/-    2.13  0.060 / 0.030
G13     247.0          29.3                7.9 +/-    1.69      14.1 +/-    1.69  0.060 / 0.040
G15     280.8          15.2                4.8 +/-    2.72      11.8 +/-    2.72  0.070 / 0.100
G17     338.4          77.4                8.6 +/-    0.67       8.8 +/-    0.67  0.070 / 0.130
G19     250.1          61.4               10.4 +/-    0.42      11.7 +/-    0.42  0.040 / 0.050
G24     318.2          12.4                6.5 +/-    2.15      17.2 +/-    2.15  0.040 / 0.050
G28     52.0           54.0                8.9 +/-    1.30      10.8 +/-    1.30  0.140 / 0.470
G30     151.0          38.8                9.7 +/-    0.82      14.3 +/-    0.82  0.110 / 0.320