PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-23:27:50
G01     48.0           23.9                8.8 +/-    1.65      17.6 +/-    1.65  0.110 / 0.420
G06     177.5          27.5               13.0 +/-    1.31      24.0 +/-    1.31  0.110 / 0.500
G07     147.2          10.4               14.3 +/-    1.16      39.4 +/-    1.16  0.060 / 0.100
G11     44.6           14.7                7.6 +/-    1.74      19.1 +/-    1.74  0.060 / 0.090
G13     248.3          28.8               12.1 +/-    2.17      21.6 +/-    2.17  0.180 / 0.330
G15     280.7          15.4                9.3 +/-    2.65      22.9 +/-    2.65  0.220 / 0.400
G17     308.1          77.2                9.6 +/-    0.68       9.8 +/-    0.68  0.050 / 0.050
G19     251.3          61.6               10.6 +/-    0.57      11.9 +/-    0.57  0.070 / 0.080
G28     57.1           51.5                8.9 +/-    0.93      11.1 +/-    0.93  0.090 / 0.150
G30     150.3          36.3               13.2 +/-    0.65      20.4 +/-    0.65  0.080 / 0.120