PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-12:58:10
G01     43.5           19.5                5.1 +/-    1.75      11.4 +/-    1.75  0.160 / 0.180
G06     174.9          33.3                6.6 +/-    1.48      10.9 +/-    1.48  0.130 / 0.310
G11     43.5           9.6                 4.4 +/-    2.73      12.2 +/-    2.73  0.030 / 0.030
G13     241.4          26.4                8.4 +/-    1.30      15.9 +/-    1.30  0.030 / 0.030
G15     276.9          13.8                5.5 +/-    1.89      14.1 +/-    1.89  0.040 / 0.030
G17     332.7          76.1                5.5 +/-    0.37       5.6 +/-    0.37  0.040 / 0.040
G19     263.1          67.5                6.9 +/-    0.67       7.4 +/-    0.67  0.090 / 0.240
G24     318.1          13.4                3.2 +/-    1.39       8.3 +/-    1.39  0.130 / 0.190
G28     55.4           54.2                5.9 +/-    0.74       7.1 +/-    0.74  0.070 / 0.110
G30     153.0          34.0                5.7 +/-    1.20       9.2 +/-    1.20  0.060 / 0.090