PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-14:27:20
G02     201.7          22.4               -4.9 +/-    2.27     -10.1 +/-    2.27  0.040 / 0.040
G06     166.9          58.9                9.2 +/-    0.59      10.5 +/-    0.59  0.050 / 0.040
G13     223.0          10.6                7.8 +/-    2.20      21.5 +/-    2.20  0.130 / 0.210
G17     21.3           59.5                8.1 +/-    0.69       9.2 +/-    0.69  0.100 / 0.160
G19     341.0          69.9                7.3 +/-    0.49       7.7 +/-    0.49  0.040 / 0.030
G24     307.2          31.7                6.3 +/-    1.11      10.6 +/-    1.11  0.040 / 0.030
G28     88.0           42.7                8.3 +/-    1.32      11.6 +/-    1.32  0.030 / 0.030
G30     157.5          10.8                9.6 +/-    5.34      26.4 +/-    5.34  0.040 / 0.040