PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-15:57:40
G01     86.6           32.5                9.0 +/-    0.71      15.1 +/-    0.71  0.070 / 0.120
G07     128.3          43.0               10.7 +/-    0.86      14.9 +/-    0.86  0.070 / 0.100
G11     65.0           38.3                9.0 +/-    1.93      13.5 +/-    1.93  0.030 / 0.030
G13     290.9          36.9               13.3 +/-    2.56      20.4 +/-    2.56  0.030 / 0.030
G17     217.1          55.8               12.5 +/-    0.70      14.8 +/-    0.70  0.030 / 0.050
G18     60.6           23.1                8.4 +/-    1.58      17.1 +/-    1.58  0.030 / 0.060
G19     216.3          27.5               12.3 +/-    2.06      22.7 +/-    2.06  0.060 / 0.050
G28     355.1          61.5               10.3 +/-    0.72      11.5 +/-    0.72  0.070 / 0.040
G30     112.9          74.2               11.8 +/-    0.69      12.3 +/-    0.69  0.120 / 0.120