PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-03:28:10
G02     202.0          35.2                7.0 +/-    1.21      11.1 +/-    1.21  0.060 / 0.110
G06     166.0          66.3                6.1 +/-    0.40       6.6 +/-    0.40  0.060 / 0.100
G12     306.5          13.0                4.3 +/-    1.43      11.2 +/-    1.43  0.250 / 0.190
G17     32.9           51.7                4.3 +/-    1.26       5.3 +/-    1.26  0.100 / 0.230
G19     359.0          65.9                3.5 +/-    0.45       3.8 +/-    0.45  0.030 / 0.020
G24     300.2          36.8                3.7 +/-    1.91       5.6 +/-    1.91  0.030 / 0.020
G28     101.6          31.5                4.4 +/-    1.04       7.5 +/-    1.04  0.030 / 0.030