PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-16:57:40
G01     45.8           21.9                7.4 +/-    2.77      15.6 +/-    2.77  0.040 / 0.050
G06     176.5          29.2               10.8 +/-    1.23      19.1 +/-    1.23  0.040 / 0.050
G11     43.6           11.1                7.9 +/-    3.85      21.5 +/-    3.85  0.310 / 0.520
G13     244.5          28.2               10.5 +/-    1.56      19.1 +/-    1.56  0.420 / 0.520
G15     278.5          14.8                9.8 +/-    1.58      24.5 +/-    1.58  0.260 / 0.390
G17     327.8          77.2               10.2 +/-    0.67      10.4 +/-    0.67  0.220 / 0.370
G19     255.5          64.8               10.5 +/-    0.77      11.4 +/-    0.77  0.170 / 0.210
G24     318.5          11.8               -1.7 +/-   32.04      -4.6 +/-   32.04  0.140 / 0.190
G28     52.2           54.6                9.6 +/-    1.16      11.5 +/-    1.16  0.020 / 0.030
G30     151.1          34.1               11.1 +/-    0.99      17.8 +/-    0.99  0.030 / 0.030