PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-01:27:40
G01     123.5          14.6                9.5 +/-    3.24      23.7 +/-    3.24  0.030 / 0.050
G07     66.0           68.6                7.2 +/-    0.85       7.7 +/-    0.85  0.040 / 0.050
G08     48.0           37.0                5.4 +/-    0.92       8.2 +/-    0.92  0.100 / 0.400
G09     178.4          32.3               10.1 +/-    1.43      16.9 +/-    1.43  0.140 / 0.340
G11     115.6          37.1                8.6 +/-    0.57      13.2 +/-    0.57  0.040 / 0.060
G13     320.2          14.3                4.5 +/-    2.24      11.4 +/-    2.24  0.040 / 0.060
G17     200.9          18.9               10.1 +/-    0.60      22.9 +/-    0.60  0.120 / 0.240
G28     284.7          55.6                7.9 +/-    0.57       9.3 +/-    0.57  0.100 / 0.250
G30     345.5          66.8                5.3 +/-    0.54       5.7 +/-    0.54  0.030 / 0.040