PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-23:58:10
G01     102.6          27.8               11.0 +/-    0.75      20.1 +/-    0.75  0.070 / 0.060
G07     113.0          55.1               10.7 +/-    0.36      12.7 +/-    0.36  0.060 / 0.060
G08     42.0           19.1                6.0 +/-    2.15      13.5 +/-    2.15  0.040 / 0.080
G09     174.7          10.7               14.0 +/-    1.44      38.6 +/-    1.44  0.040 / 0.070
G11     86.9           43.8                9.6 +/-    0.81      13.1 +/-    0.81  0.090 / 0.160
G13     306.5          30.6                8.9 +/-    0.83      15.5 +/-    0.83  0.090 / 0.130
G17     208.5          40.4               12.1 +/-    0.75      17.4 +/-    0.75  0.080 / 0.170
G19     210.4          17.1               12.9 +/-    0.76      30.5 +/-    0.76  0.090 / 0.140
G28     328.2          61.7                8.1 +/-    0.81       9.0 +/-    0.81  0.040 / 0.080
G30     67.4           78.0                9.8 +/-    0.44      10.0 +/-    0.44  0.030 / 0.070