PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/04-06:43:10
G01     73.5           33.1                5.2 +/-    1.03       8.6 +/-    1.03  0.040 / 0.040
G07     136.0          32.5                8.3 +/-    1.21      13.9 +/-    1.21  0.040 / 0.050
G11     55.8           32.1                3.9 +/-    1.28       6.5 +/-    1.28  0.030 / 0.030
G13     279.2          37.2                4.1 +/-    1.14       6.3 +/-    1.14  0.030 / 0.040
G15     304.3          15.1                1.1 +/-    1.98       2.7 +/-    1.98  0.090 / 0.210
G17     230.1          68.3                7.7 +/-    0.43       8.3 +/-    0.43  0.080 / 0.210
G19     222.6          41.2                7.3 +/-    1.83      10.3 +/-    1.83  0.050 / 0.070
G28     16.7           59.5                4.7 +/-    1.18       5.3 +/-    1.18  0.050 / 0.090
G30     132.3          62.8                8.3 +/-    0.56       9.2 +/-    0.56  0.260 / 0.260