PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/10-11:27:40
G01     77.1           33.3                5.3 +/-    1.78       8.6 +/-    1.78  0.030 / 0.030
G07     134.1          35.2                7.5 +/-    1.55      11.8 +/-    1.55  0.030 / 0.020
G11     56.8           33.3                4.9 +/-    1.33       8.0 +/-    1.33  0.070 / 0.080
G13     280.8          38.1                6.3 +/-    2.00       9.4 +/-    2.00  0.080 / 0.080
G17     225.3          65.8                8.1 +/-    0.76       8.8 +/-    0.76  0.060 / 0.110
G18     52.4           19.8                3.3 +/-    5.61       7.2 +/-    5.61  0.070 / 0.100
G19     220.5          32.6                6.1 +/-    2.01      10.2 +/-    2.01  0.060 / 0.070
G28     8.3            60.6                6.0 +/-    1.50       6.7 +/-    1.50  0.040 / 0.060
G30     128.7          68.6                7.9 +/-    1.02       8.4 +/-    1.02  0.310 / 0.180