PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-05:28:10
G01     96.9           29.9                5.8 +/-    0.63      10.1 +/-    0.63  0.050 / 0.060
G07     119.5          50.0                7.7 +/-    1.12       9.7 +/-    1.12  0.040 / 0.050
G08     41.9           12.1                1.9 +/-    2.20       5.0 +/-    2.20  0.030 / 0.040
G11     76.8           41.5                6.0 +/-    0.56       8.5 +/-    0.56  0.030 / 0.050
G13     302.2          32.7                3.8 +/-    0.82       6.4 +/-    0.82  0.120 / 0.140
G17     210.5          48.6                7.1 +/-    1.28       9.2 +/-    1.28  0.130 / 0.170
G19     212.0          22.8                5.3 +/-    1.23      10.8 +/-    1.23  0.040 / 0.060
G28     338.8          61.8                3.1 +/-    0.50       3.5 +/-    0.50  0.030 / 0.050
G30     82.6           77.9                5.0 +/-    0.88       5.1 +/-    0.88  0.060 / 0.120