PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-04:42:40
G07     336.0          58.9                4.7 +/-    1.29       5.3 +/-    1.29  0.080 / 0.160
G08     95.6           51.7                6.9 +/-    0.30       8.5 +/-    0.30  0.080 / 0.160
G09     189.7          72.6                7.4 +/-    1.00       7.7 +/-    1.00  0.110 / 0.440
G11     144.7          13.4                5.7 +/-    2.69      14.7 +/-    2.69  0.140 / 0.460
G16     46.6           11.4                2.7 +/-    1.49       7.2 +/-    1.49  0.040 / 0.040
G23     156.3          42.0                9.1 +/-    1.69      12.8 +/-    1.69  0.030 / 0.050
G27     53.3           30.3                5.4 +/-    0.64       9.5 +/-    0.64  0.040 / 0.060
G28     238.5          31.1                5.9 +/-    1.80      10.2 +/-    1.80  0.030 / 0.050
G30     303.1          36.2                5.2 +/-    0.98       8.1 +/-    0.98  0.060 / 0.090