PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/02-14:27:50
G01     66.0           32.2                7.7 +/-    1.30      12.9 +/-    1.30  0.040 / 0.040
G07     139.7          27.2               10.5 +/-    1.95      19.6 +/-    1.95  0.040 / 0.040
G11     50.6           27.0                6.3 +/-    2.43      11.8 +/-    2.43  0.060 / 0.070
G13     268.9          36.9                8.2 +/-    1.22      12.6 +/-    1.22  0.060 / 0.100
G15     301.6          14.5                4.5 +/-    2.33      11.4 +/-    2.33  0.130 / 0.200
G17     243.0          73.3               10.0 +/-    0.65      10.3 +/-    0.65  0.080 / 0.160
G18     45.6           15.7                5.8 +/-    1.66      14.1 +/-    1.66  0.040 / 0.050
G19     227.1          42.5               10.2 +/-    1.49      14.3 +/-    1.49  0.040 / 0.050
G28     26.4           58.3                7.9 +/-    1.00       9.1 +/-    1.00  0.060 / 0.130
G30     139.7          59.1                8.6 +/-    0.73       9.9 +/-    0.73  0.060 / 0.130