PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-21:58:00
G07     336.6          59.2               11.7 +/-    0.56      13.3 +/-    0.56  0.030 / 0.050
G08     98.4           53.2               11.8 +/-    0.94      14.3 +/-    0.94  0.030 / 0.050
G09     190.9          71.6               12.7 +/-    0.67      13.3 +/-    0.67  0.090 / 0.160
G11     146.6          13.9               13.3 +/-    3.51      33.9 +/-    3.51  0.080 / 0.160
G23     155.8          37.0               12.7 +/-    1.07      19.5 +/-    1.07  0.060 / 0.090
G27     51.9           29.6                9.2 +/-    1.53      16.2 +/-    1.53  0.060 / 0.100
G28     239.9          32.4               10.2 +/-    1.70      17.1 +/-    1.70  0.070 / 0.100
G30     306.8          40.3                9.3 +/-    1.02      13.4 +/-    1.02  0.060 / 0.100