PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-02:27:50
G01     54.3           28.0                1.7 +/-    1.07       3.1 +/-    1.07  0.040 / 0.060
G06     180.3          18.8                7.3 +/-    1.05      16.5 +/-    1.05  0.030 / 0.050
G07     144.7          17.0                4.8 +/-    1.43      11.3 +/-    1.43  0.030 / 0.030
G11     46.9           21.2                1.8 +/-    1.65       3.8 +/-    1.65  0.030 / 0.040
G13     256.6          32.7                4.4 +/-    1.70       7.2 +/-    1.70  0.160 / 0.260
G15     287.4          16.6                3.9 +/-    1.53       9.4 +/-    1.53  0.100 / 0.360
G17     282.0          77.9                5.2 +/-    0.95       5.3 +/-    0.95  0.050 / 0.100
G19     240.1          56.5                5.8 +/-    0.95       6.8 +/-    0.95  0.060 / 0.100
G28     46.2           54.3                4.1 +/-    0.61       4.9 +/-    0.61  0.070 / 0.160