PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-04:58:00
G01     113.3          21.9                7.0 +/-    0.80      14.8 +/-    0.80  0.060 / 0.050
G07     95.6           62.3                4.0 +/-    0.67       4.5 +/-    0.67  0.040 / 0.050
G08     42.9           25.6                2.7 +/-    1.06       5.2 +/-    1.06  0.030 / 0.050
G09     176.3          20.1                5.4 +/-    1.07      11.8 +/-    1.07  0.030 / 0.040
G11     98.9           41.4                4.4 +/-    0.80       6.2 +/-    0.80  0.060 / 0.100
G13     315.0          23.0                2.0 +/-    1.46       4.0 +/-    1.46  0.040 / 0.090
G17     203.3          32.2                9.8 +/-    2.17      16.4 +/-    2.17  0.060 / 0.100
G28     306.3          59.8                5.1 +/-    0.87       5.8 +/-    0.87  0.050 / 0.090
G30     6.1            74.3                4.8 +/-    0.50       5.0 +/-    0.50  0.080 / 0.160