PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/16-01:57:40
G01     41.8           17.5                2.8 +/-    2.87       6.4 +/-    2.87  0.130 / 0.230
G06     178.7          33.2                6.3 +/-    1.16      10.4 +/-    1.16  0.120 / 0.270
G13     238.4          23.5                6.3 +/-    1.82      12.7 +/-    1.82  0.070 / 0.090
G15     272.3          12.8                3.1 +/-    1.53       8.1 +/-    1.53  0.060 / 0.080
G17     4.3            70.5                4.2 +/-    0.43       4.5 +/-    0.43  0.180 / 0.240
G19     270.2          67.5                4.3 +/-    0.44       4.6 +/-    0.44  0.310 / 0.260
G24     316.1          20.2                1.0 +/-    2.65       2.2 +/-    2.65  0.040 / 0.030
G28     65.8           50.0                3.0 +/-    1.36       3.8 +/-    1.36  0.050 / 0.030
G30     154.2          29.6                6.1 +/-    1.03      10.8 +/-    1.03  0.090 / 0.170