PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-04:58:00
G07     344.4          61.5                4.1 +/-    1.36       4.6 +/-    1.36  0.090 / 0.150
G08     86.8           52.1                6.2 +/-    0.80       7.7 +/-    0.80  0.080 / 0.130
G09     184.9          67.1                7.6 +/-    1.08       8.2 +/-    1.08  0.030 / 0.040
G11     141.4          16.6                6.9 +/-    1.03      16.6 +/-    1.03  0.030 / 0.050
G23     157.7          36.7                8.8 +/-    2.10      13.5 +/-    2.10  0.030 / 0.060
G27     49.1           27.3                2.6 +/-    0.81       4.8 +/-    0.81  0.030 / 0.060
G28     242.9          35.0                7.1 +/-    2.08      11.3 +/-    2.08  0.030 / 0.030
G30     307.2          39.6                2.8 +/-    0.95       4.1 +/-    0.95  0.030 / 0.040