PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-01:27:50
G01     78.8           33.3                6.0 +/-    1.03       9.9 +/-    1.03  0.040 / 0.050
G07     133.1          37.3                9.7 +/-    0.39      14.8 +/-    0.39  0.040 / 0.060
G11     61.2           37.0                5.7 +/-    0.85       8.8 +/-    0.85  0.030 / 0.050
G13     284.0          37.3                7.0 +/-    0.86      10.7 +/-    0.86  0.050 / 0.050
G15     307.6          14.1                5.6 +/-    2.56      14.1 +/-    2.56  0.060 / 0.080
G17     223.7          61.3                8.7 +/-    1.56       9.8 +/-    1.56  0.080 / 0.090
G19     219.7          36.2                8.5 +/-    2.57      13.2 +/-    2.57  0.100 / 0.120
G28     8.7            60.5                6.3 +/-    1.70       7.2 +/-    1.70  0.050 / 0.080
G30     127.6          63.5                9.4 +/-    0.91      10.4 +/-    0.91  0.040 / 0.060