PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/18-01:42:40
G01     128.3          10.7              -12.7 +/-   34.61     -34.8 +/-   34.61  0.040 / 0.080
G07     47.7           69.6                4.4 +/-    0.51       4.7 +/-    0.51  0.040 / 0.060
G08     52.3           41.6                2.7 +/-    0.72       3.8 +/-    0.72  0.040 / 0.050
G09     179.1          38.7                5.0 +/-    0.56       7.4 +/-    0.56  0.040 / 0.050
G11     121.9          33.6                5.7 +/-    1.28       9.3 +/-    1.28  0.040 / 0.310
G17     199.9          13.2                4.5 +/-    2.40      11.8 +/-    2.40  0.050 / 0.300
G28     274.8          52.6                4.7 +/-    0.70       5.8 +/-    0.70  0.030 / 0.040
G30     335.9          61.7                1.8 +/-    0.70       2.0 +/-    0.70  0.030 / 0.040