PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/06-02:27:50
G01     70.4           32.9                2.5 +/-    1.26       4.1 +/-    1.26  0.040 / 0.040
G07     137.6          30.9                4.6 +/-    0.70       7.8 +/-    0.70  0.030 / 0.040
G11     55.0           32.3                2.2 +/-    1.45       3.8 +/-    1.45  0.050 / 0.090
G13     275.1          37.2                4.4 +/-    2.92       6.6 +/-    2.92  0.060 / 0.070
G15     301.6          15.8                1.5 +/-    1.69       3.6 +/-    1.69  0.050 / 0.030
G17     233.9          68.3                5.3 +/-    0.38       5.7 +/-    0.38  0.040 / 0.020
G19     224.6          42.9                5.7 +/-    2.26       8.0 +/-    2.26  0.070 / 0.090
G28     21.4           58.9                0.9 +/-    2.17       1.1 +/-    2.17  0.080 / 0.090
G30     135.5          57.1                5.0 +/-    0.35       5.8 +/-    0.35  0.070 / 0.130