PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/14-07:12:40
G07     44.1           69.4                5.9 +/-    0.68       6.3 +/-    0.68  0.040 / 0.050
G08     52.2           40.4                4.7 +/-    1.04       6.8 +/-    1.04  0.040 / 0.060
G09     174.4          35.3                8.2 +/-    1.55      13.0 +/-    1.55  0.030 / 0.030
G11     120.6          33.4                8.0 +/-    0.61      13.0 +/-    0.61  0.030 / 0.040
G17     198.7          13.0                3.6 +/-    2.08       9.3 +/-    2.08  0.140 / 0.190
G18     105.4          14.8                6.5 +/-    2.04      16.3 +/-    2.04  0.120 / 0.240
G23     161.3          12.6                4.9 +/-    4.47      12.9 +/-    4.47  0.140 / 0.250
G27     38.2           11.6                2.5 +/-    1.57       6.6 +/-    1.57  0.120 / 0.240
G28     269.1          49.8                5.4 +/-    1.09       6.8 +/-    1.09  0.090 / 0.300
G30     326.6          56.0                3.9 +/-    0.95       4.6 +/-    0.95  0.090 / 0.270