PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/06-11:57:50
G01     43.3           19.3                2.9 +/-    0.84       6.6 +/-    0.84  0.150 / 0.250
G06     174.7          33.6                5.6 +/-    0.78       9.1 +/-    0.78  0.100 / 0.210
G13     241.2          26.3                5.3 +/-    1.82      10.1 +/-    1.82  0.040 / 0.050
G17     336.7          75.8                5.3 +/-    0.57       5.5 +/-    0.57  0.040 / 0.060
G19     263.7          67.7                3.9 +/-    0.34       4.2 +/-    0.34  0.030 / 0.030
G24     318.1          13.4                1.8 +/-    2.58       4.6 +/-    2.58  0.030 / 0.030
G28     55.3           54.3                2.6 +/-    0.61       3.2 +/-    0.61  0.050 / 0.040
G30     153.3          34.4                6.1 +/-    1.83       9.8 +/-    1.83  0.040 / 0.040