PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-01:42:40
G01     51.0           26.1                5.0 +/-    1.67       9.6 +/-    1.67  0.080 / 0.150
G06     179.2          22.8                5.9 +/-    1.38      12.1 +/-    1.38  0.120 / 0.180
G07     146.0          13.7                7.4 +/-    2.80      19.0 +/-    2.80  0.030 / 0.060
G11     45.8           18.6                3.1 +/-    1.02       7.0 +/-    1.02  0.040 / 0.050
G13     252.4          30.9                5.9 +/-    1.67      10.1 +/-    1.67  0.030 / 0.030
G15     283.9          16.1                5.2 +/-    2.36      12.6 +/-    2.36  0.020 / 0.030
G17     298.5          78.1                4.9 +/-    0.59       5.0 +/-    0.59  0.080 / 0.090
G19     245.5          59.4                6.3 +/-    1.24       7.2 +/-    1.24  0.070 / 0.100
G28     51.8           52.9                4.1 +/-    0.41       5.0 +/-    0.41  0.190 / 0.340
G30     148.2          38.6                6.6 +/-    1.34       9.8 +/-    1.34  0.130 / 0.330