PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-12:28:10
G02     202.0          24.3                3.8 +/-    1.25       7.6 +/-    1.25  0.040 / 0.070
G06     165.1          61.0                7.0 +/-    0.90       7.9 +/-    0.90  0.040 / 0.080
G17     25.3           57.1                5.0 +/-    0.39       5.9 +/-    0.39  0.090 / 0.110
G19     346.7          69.1                5.2 +/-    0.49       5.5 +/-    0.49  0.100 / 0.120
G24     306.1          32.5                5.5 +/-    3.13       9.2 +/-    3.13  0.030 / 0.040
G28     89.6           42.2                5.3 +/-    0.63       7.4 +/-    0.63  0.030 / 0.040
G30     158.1          10.3                4.3 +/-    3.64      11.8 +/-    3.64  0.030 / 0.040