PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-15:13:00
G01     46.5           22.5                7.0 +/-    2.43      14.4 +/-    2.43  0.160 / 0.180
G06     176.3          28.5                9.3 +/-    1.64      16.8 +/-    1.64  0.080 / 0.140
G11     43.9           12.5                6.2 +/-    2.02      16.5 +/-    2.02  0.110 / 0.130
G13     245.5          29.0               10.9 +/-    1.68      19.4 +/-    1.68  0.030 / 0.050
G15     280.0          15.0                8.2 +/-    2.19      20.4 +/-    2.19  0.040 / 0.050
G17     316.0          77.6                8.5 +/-    0.59       8.7 +/-    0.59  0.030 / 0.020
G19     253.2          64.2                9.2 +/-    0.81      10.1 +/-    0.81  0.030 / 0.030
G24     318.7          10.4              -16.3 +/-   15.15     -45.1 +/-   15.15  0.040 / 0.040
G28     49.6           55.3                8.6 +/-    0.64      10.2 +/-    0.64  0.050 / 0.040
G30     151.0          36.6                8.0 +/-    0.80      12.3 +/-    0.80  0.110 / 0.260