PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-00:43:00
G01     78.9           33.3                7.1 +/-    1.04      11.7 +/-    1.04  0.040 / 0.050
G07     133.1          37.4                9.7 +/-    0.82      14.7 +/-    0.82  0.030 / 0.060
G11     61.6           37.3                6.0 +/-    0.54       9.1 +/-    0.54  0.020 / 0.040
G13     283.9          37.4                8.9 +/-    0.89      13.6 +/-    0.89  0.040 / 0.050
G15     307.6          14.1                6.2 +/-    1.65      15.7 +/-    1.65  0.070 / 0.100
G17     223.6          60.7               11.7 +/-    1.22      13.3 +/-    1.22  0.070 / 0.090
G19     219.7          36.0               11.8 +/-    1.70      18.3 +/-    1.70  0.050 / 0.110
G28     8.7            60.5                6.3 +/-    0.70       7.2 +/-    0.70  0.040 / 0.090
G30     127.5          64.0               10.0 +/-    0.94      11.0 +/-    0.94  0.050 / 0.110