PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/04-04:42:50
G02     214.8          59.5                3.8 +/-    0.69       4.3 +/-    0.69  0.090 / 0.100
G06     73.0           79.9                2.5 +/-    0.46       2.5 +/-    0.46  0.070 / 0.090
G12     317.2          32.8                1.5 +/-    0.97       2.5 +/-    0.97  0.110 / 0.220
G17     57.4           31.1                2.1 +/-    2.17       3.6 +/-    2.17  0.120 / 0.240
G19     36.1           50.9                3.1 +/-    2.30       3.9 +/-    2.30  0.050 / 0.110
G24     263.2          42.5                4.7 +/-    3.17       6.5 +/-    3.17  0.080 / 0.090
G28     120.7          17.4                4.8 +/-    1.27      11.2 +/-    1.27  0.030 / 0.020