PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-14:57:50
G01     123.5          14.5               12.8 +/-    3.38      32.2 +/-    3.38  0.030 / 0.040
G07     65.7           68.7               10.7 +/-    0.80      11.3 +/-    0.80  0.020 / 0.040
G08     47.7           36.3                9.1 +/-    0.76      14.1 +/-    0.76  0.030 / 0.040
G09     176.9          30.4               10.6 +/-    1.67      18.3 +/-    1.67  0.030 / 0.040
G11     113.2          37.6               11.3 +/-    0.95      17.1 +/-    0.95  0.190 / 0.360
G13     319.8          15.3                6.7 +/-    2.91      16.6 +/-    2.91  0.140 / 0.280
G17     200.9          18.3               11.0 +/-    1.44      25.3 +/-    1.44  0.070 / 0.120
G18     99.5           18.7               11.6 +/-    0.89      26.4 +/-    0.89  0.060 / 0.100
G28     283.5          55.1                9.7 +/-    0.90      11.5 +/-    0.90  0.110 / 0.220
G30     338.1          64.0               10.0 +/-    0.56      11.0 +/-    0.56  0.080 / 0.220