PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-22:27:50
G01     65.3           32.1               11.2 +/-    1.60      18.8 +/-    1.60  0.110 / 0.240
G07     140.1          27.1               14.3 +/-    0.76      26.7 +/-    0.76  0.120 / 0.230
G11     51.8           29.0                9.8 +/-    1.51      17.5 +/-    1.51  0.130 / 0.350
G13     268.9          36.5               13.6 +/-    1.97      21.1 +/-    1.97  0.160 / 0.320
G15     298.0          16.2               11.3 +/-    1.29      27.2 +/-    1.29  0.040 / 0.050
G17     240.3          68.7               12.9 +/-    0.47      13.7 +/-    0.47  0.030 / 0.040
G18     45.9           16.1                9.2 +/-    1.96      22.3 +/-    1.96  0.050 / 0.080
G19     228.1          45.8               14.0 +/-    2.20      18.6 +/-    2.20  0.040 / 0.100
G28     28.6           57.9               14.2 +/-    1.28      16.4 +/-    1.28  0.070 / 0.110
G30     139.7          54.8               14.2 +/-    0.44      16.9 +/-    0.44  0.050 / 0.100