PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-06:57:40
G02     214.7          62.3                8.8 +/-    0.83       9.8 +/-    0.83  0.050 / 0.080
G06     60.6           75.1                7.6 +/-    0.76       7.8 +/-    0.76  0.040 / 0.070
G12     318.1          36.7                5.3 +/-    1.88       8.1 +/-    1.88  0.060 / 0.040
G17     56.7           31.9                4.2 +/-    2.53       7.1 +/-    2.53  0.080 / 0.060
G19     40.1           48.0                6.1 +/-    1.35       7.9 +/-    1.35  0.070 / 0.150
G24     268.0          41.1                7.9 +/-    1.76      11.3 +/-    1.76  0.100 / 0.200
G28     119.3          22.5                9.4 +/-    1.75      19.5 +/-    1.75  0.060 / 0.040