PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/21-05:27:50
G01     110.8          23.3                5.4 +/-    1.67      10.9 +/-    1.67  0.030 / 0.030
G07     102.0          59.3                6.6 +/-    0.45       7.6 +/-    0.45  0.030 / 0.030
G08     41.9           21.2                2.4 +/-    1.10       5.1 +/-    1.10  0.070 / 0.200
G09     173.5          14.6                6.2 +/-    0.80      15.6 +/-    0.80  0.060 / 0.210
G11     92.0           42.3                5.8 +/-    0.52       8.1 +/-    0.52  0.040 / 0.060
G13     312.2          26.6                2.7 +/-    0.94       5.1 +/-    0.94  0.040 / 0.060
G17     203.2          36.4                7.2 +/-    1.28      11.1 +/-    1.28  0.040 / 0.040
G28     306.7          59.4                4.1 +/-    0.83       4.7 +/-    0.83  0.030 / 0.040
G30     2.0            75.0                5.3 +/-    0.64       5.5 +/-    0.64  0.040 / 0.070