PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-00:27:50
G01     113.4          21.9                7.9 +/-    1.77      16.7 +/-    1.77  0.050 / 0.050
G07     94.7           63.1                8.2 +/-    0.67       9.1 +/-    0.67  0.040 / 0.040
G08     43.4           28.0                5.6 +/-    1.57      10.2 +/-    1.57  0.090 / 0.110
G09     176.8          20.7                8.4 +/-    0.67      18.1 +/-    0.67  0.080 / 0.120
G11     101.9          42.1                8.7 +/-    0.49      12.3 +/-    0.49  0.110 / 0.150
G13     314.7          23.4                4.7 +/-    1.10       9.5 +/-    1.10  0.090 / 0.150
G17     204.0          29.8                8.5 +/-    2.25      14.9 +/-    2.25  0.050 / 0.040
G28     306.1          59.8                6.6 +/-    0.92       7.5 +/-    0.92  0.030 / 0.030